As Jmm24 says, the 700xx oem tires do fine in the sand. I have done a lot of sand riding with the stock tires, and have no complaints. I do run lower pressure (2-3 psi) if the sand is really fine and loose. Unless you just have to have maximum traction or you can get them for a really good price, I would not even bother with paddles. But that is me.